Black Boxes
Overview:
Now that you've had some experience using a function generator, an oscilloscope and played with low-pass and high-pass filters you will be given some 'black boxes' with three terminals. The idea is to identify what is between the terminals using various electronic tests.
There are six 'black boxes' - each labeled with a number. Each box has a red terminal, a black terminal and a BNC connector on the back. The ground of the BNC connector is directly connected to either the black or red terminal - you need to determine which. You will use a BNC to banana adaptor for the input signal. Note the black banana plug is ground. Between the center pin of the BNC connector and the either the red or black terminal (the one NOT connected directly to ground) is a resistor or a capacitor. Similarly between the red and black terminal is a resistor or a capacitor.
A given black box corresponds to one of these circuits:
Procedure:
- Use a DVM, scope and function generator to determine which of these circuits describes your black boxes and for each specify the value of the resistor or capacitance between each of the terminals.
Writeup Guidelines:
Download the following Word Document template [lab2_writeup.doc] and fill it out. Either place it on your website or send to me as an e-mail attachment. Only one writeup per team should be submitted.
Comments:
Only two lab partners per writeup. You can collaborate on the writeup and even submit the same writeup (that is the two lab partners) but each should post the writeup on his/her own site.We will have two setups for doing this lab in the room behind SW135.
Also now that you've played somewhat with an oscilloscope I would urge you to review again the functions of the various buttons and knobs. Scopes differ from each other somewhat - from manufacturer to manufacturer and from model to model - but all scopes have the same general characteristics. Please make use of the nice on-line resources here: Oscilloscopes